Jenkins up to 2.145 Stapler Web Framework Facet.java path traversal

Summaryinfo

A vulnerability identified as critical has been detected in Jenkins up to 2.145. The affected element is an unknown function of the file core/src/main/java/org/kohsuke/stapler/Facet.java of the component Stapler Web Framework. Performing a manipulation results in path traversal. This vulnerability is known as CVE-2018-1000997. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Jenkins up to 2.145 (Continuous Integration Software). This affects some unknown functionality of the file core/src/main/java/org/kohsuke/stapler/Facet.java of the component Stapler Web Framework. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A path traversal vulnerability exists in the Stapler web framework used by Jenkins 2.145 and earlier, LTS 2.138.1 and earlier in core/src/main/java/org/kohsuke/stapler/Facet.java, groovy/src/main/java/org/kohsuke/stapler/jelly/groovy/GroovyFacet.java, jelly/src/main/java/org/kohsuke/stapler/jelly/JellyFacet.java, jruby/src/main/java/org/kohsuke/stapler/jelly/jruby/JRubyFacet.java, jsp/src/main/java/org/kohsuke/stapler/jsp/JSPFacet.java that allows attackers to render routable objects using any view in Jenkins, exposing internal information about those objects not intended to be viewed, such as their toString() representation.

The bug was discovered 01/23/2019. The weakness was published 01/23/2019 (Website). The advisory is shared at jenkins.io. This vulnerability is uniquely identified as CVE-2018-1000997 since 01/23/2019. The exploitability is told to be easy. It is possible to initiate the attack remotely. A authentication is required for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Continuous Integration Software

Name

• Jenkins

Version

• 2.145

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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